Formal or Informal teaching of grammar creates confusions and conflicts in the learner. When we teach grammar rules, the learner thinks about the grammar rules while he/she is about to talk. Then he/she can’t talk and can’t concentrate in the topic. Then talking becomes more difficult and confusing. All language related things (grammar rules and conditions) are automatically exchanged from the speaker to the listener while talking and hearing. It doesn’t mean that, there is no grammar. The teaching of the grammar is the problem.
~BABA ALEXANDER NEW DELHI